Discrete rate spectral efficiency for adaptive MIMO systems
2008 (English)In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2008, 3089-3092 p.Conference paper (Refereed)
Adaptive modulation scheme has been widely used in multiple-input multiple-output (MIMO) systems to enhance spectral efficiency while maintaining bit-error rate (BER) under a target level. We consider two MIMO schemes, orthogonal space-time block codes (OSTBC) and spatial multiplexing with zero-forcing receiver (SM-ZF), that apply adaptive modulation and derive closed-form expressions of the average spectral efficiency. Based on the closed-form expression of the average spectral efficiency, a low complexity switching method is utilized to gain significant improvement in spectral efficiency over an adaptive modulation system using a single MIMO scheme.
Place, publisher, year, edition, pages
2008. 3089-3092 p.
, International Conference on Acoustics Speech and Signal Processing (ICASSP), ISSN 1520-6149
MIMO systems, communication system operations and management, communication system performance
IdentifiersURN: urn:nbn:se:kth:diva-38771DOI: 10.1109/ICASSP.2008.4518303ISI: 000257456702095ScopusID: 2-s2.0-51449123917ISBN: 978-1-4244-1483-3OAI: oai:DiVA.org:kth-38771DiVA: diva2:439114
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP; Las Vegas, NV; 31 March 2008 through 4 April 2008